[Xorp-users] [OSPFv2] XORP ospf can't receive hello packet from other OSPF router

[karnik]

system configuration:
Ubuntu 8.04.1 ( as per /etc/issue.net)
kernal : 2.6.24-19-server
GCC vesion: gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)

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root at ubuntu:/usr/local/xorp/bin# uname -a
Linux ubuntu 2.6.24-19-server #1 SMP Wed Jun 18 15:18:00 UTC 2008 i686
GNU/Linux

*XORP version:* which is currently on XORP cvs

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*BUG:* XORP can't receive hello packet from other ospf router having same area, same lan segment ,hello and dead interval.

*reason: message displayed on XORP log.*
xorp error : Failed to joined multicast group 224.0.0.5: Address already in use.

And when i do /etc/init.d/networking restart at that time all routers run well, but after some time as it is. 
When i again start all routers at that time i faced same above mentioned error.

tell me what is wrong with XORP.

Test setup:

router 1 -------- router 2
eth0		  eth0




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